(svn r23617) -Add: ScriptTown::ExpandTown, to grow a town (GameScript only)

src/script/api/script_town.hpp

@@ -312,6 +312,17 @@ public:
 	 */
 	static bool PerformTownAction(TownID town_id, TownAction town_action);
 
+	/**
+	 * Expand the town.
+	 * @param town_id The town to expand.
+	 * @param houses The amount of houses to grow the town with.
+	 * @pre IsValidTown(town_id).
+	 * @pre houses > 0.
+	 * @return True if the action succeeded.
+	 * @api -ai
+	 */
+	static bool ExpandTown(TownID town_id, int houses);
+
 	/**
 	 * Get the rating of a company within a town.
 	 * @param town_id The town to get the rating for.